Use new download notification strings

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- android_chrome_strings.grd contains strings for Chrome for Android.
 
 FAQ:
   - How do I add, change, or remove a string?
       Just update this file.
   - Translations will happen automatically??
       Yes, indeed. Just add your string before the branch point and
       make the description good.
@@ skipping 1606 matching lines @@
       </message>
       <message name="IDS_DOWNLOAD_NOTIFICATION_COMPLETED" desc="Download notification to be displayed when a download completes.">
         Download complete
       </message>
       <message name="IDS_DOWNLOAD_NOTIFICATION_FAILED" desc="Download notification to be displayed when a download fails.">
         Download failed
       </message>
       <message name="IDS_DOWNLOAD_NOTIFICATION_PAUSED" desc="Download notification to be displayed when a download pauses.">
         Download paused
       </message>
+      <message name="IDS_DOWNLOAD_NOTIFICATION_PENDING" desc="Download notification to be displayed when a download is pending.">

[dewittj, 2016/11/09 23:05:24]

The translators may not know what "pending" means in this context, we could give
them some help with more information.  "when a download is pending - meaning the
download has been accepted but we are not yet fetching the request from the
network"

[qinmin, 2016/11/10 19:07:25]

Done.

+        Download pending...
+      </message>
+      <message name="IDS_DOWNLOAD_NOTIFICATION_WAITING" desc="Download notification to be displayed when a download is waiting for connection.">
+        Download waiting...
+      </message>
       <message name="IDS_DOWNLOAD_CANT_OPEN_FILE" desc="Toast that appears when a downloaded file can't be opened.">
         Can't open file
       </message>
       <message name="IDS_DOWNLOAD_NOTIFICATION_PAUSE_BUTTON" desc="Text on the button that pauses a download.">
         Pause
       </message>
       <message name="IDS_DOWNLOAD_NOTIFICATION_RESUME_BUTTON" desc="Text on the button that resumes a paused download.">
         Resume
       </message>
       <message name="IDS_DOWNLOAD_FAILED_REASON_FILE_ALREADY_EXISTS" desc="Message to explain that the download failed because file already exists.">
@@ skipping 10 matching lines @@
       </message>
       <message name="IDS_DOWNLOAD_FAILED_REASON_SERVER_ISSUES" desc="Message to explain that the download failed because of server issues.">
         <ph name="FILE_NAME">%1$s<ex>http://abc.com/test.pdf</ex></ph> download failed due to server issues.
       </message>
       <message name="IDS_DOWNLOAD_FAILED_REASON_STORAGE_NOT_FOUND" desc="Message to explain that the download failed because no storage is found.">
         <ph name="FILE_NAME">%1$s<ex>http://abc.com/test.pdf</ex></ph> download failed due to missing SD Card.
       </message>
       <message name="IDS_DOWNLOAD_FAILED_REASON_UNKNOWN_ERROR" desc="Message to explain that the download failed because unkown error.">
         <ph name="FILE_NAME">%1$s<ex>http://abc.com/test.pdf</ex></ph> download failed due to an unknown error.
       </message>
-      <message name="IDS_DOWNLOAD_PENDING" desc="Message in the list of items which have received download requests telling their status. This message states that the download has not yet begun [CHAR LIMIT=30]">
+      <message name="IDS_DOWNLOAD_STARTED" desc="Message to show when download has started [CHAR LIMIT=30]">
         Downloading…
       </message>
       <message name="IDS_DOWNLOAD_SUCCEEDED_MESSAGE" desc="Transient message shown when a file download has succeeded." meaning="Android">
         <ph name="FILE_NAME">%1$s<ex>http://abc.com/test.pdf</ex></ph> downloaded
       </message>
       <message name="IDS_REMAINING_DURATION_DAYS" desc="Message to show remaining duration in multiple days">
         <ph name="DAYS">%1$d<ex>2</ex></ph> days left
       </message>
       <message name="IDS_REMAINING_DURATION_ONE_DAY" desc="Message to show remaining duration in 1 day">
         1 day left
@@ skipping 1051 matching lines @@
       <message name="IDS_WEBAPK_UNKNOWN_SOURCES_DIALOG_MESSAGE" desc="Text of dialog warning user that installation from Unknown sources is required for WebAPK experiment">
         Turn on “Unknown sources” in Android security settings to try "Improved Add to Home screen" experiment. Be sure to disable this setting when you’re done trying it out.
       </message>
 
       <message name="IDS_WEBAPK_UNKNOWN_SOURCES_SETTINGS_BUTTON" desc="Button label for opening Android Settings from dialog warning user that installation from Unknown sources is required for WebAPK experiment.">
         Settings
       </message>
     </messages>
   </release>
 </grit>